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Re: Gemini 80-Bus System
Been trying to set up T-Net but have not had a lot of success. I have the fileserver running with the following config...
Code:
#XBEAVER network server configuration fileCode:
Trace tty : Baudrate requested 9600 set 9600On the server I see multiple trace messages like the one below... Code:
Trace tty > 00:00I wonder if you have any ideas? |
Re: Gemini 80-Bus System
1 Attachment(s)
What is the trace when you type dir n: - that might provide some clues. In the trace the lines have either > or < for tx/rx.
1. WhIe the server is runing type stty -F /dev/ttyS0 -a and check the port is set for 8 bits no parity (it should be). Also check the baud rate 2. Double check your serial lead 3. Make sure you are not using the serial port for CP/M - eg CP/M itself is not outputting to the serial port. The log should show something like Code:
Trace tty < 00: 00use the command "t-net n" to start t-net. your server configuration file looks ok. If you still have problems please post the entire console log when trying dir n: and I can see what causes the error. Usually it is a failure of the initial handshake Code:
Trace tty < 00: 00 |
Re: Gemini 80-Bus System
sudo stty -F /dev/ttyS0 -a returns the following...
Code:
[john@mopsie xbeaver]$ sudo stty -F /dev/ttyS0 -aCode:
[john@mopsie xbeaver]$ ./xbeaver fileserver.cfgCode:
A:> T-NET NCode:
A:> DIR A: (note A: not N:)Code:
Trace tty < 00: 00 00 |
Re: Gemini 80-Bus System
Please try with my disk image that is posted - as I have checked that on the simulator.
I notice in the log you have 00 00 00 00 00 on one line. That should not be happening. How have you connected the serial cable. Can you still use the serial setup with your serial version of CP/M? |
Re: Gemini 80-Bus System
If you have two serial ports on the Linux box try running an emulator with the serial port mapped to another serial port eg change the line in gemini2.cfg to
if V board 0xb8 serial_8250 trace tty tty /dev/ttyS1 which will create an 8250 emulated uart based at port address 0xb8 to ttyS1. Connect a null modem cable between ttyS0 and ttyS1 then start your t-net server on Linux and in another terminal window start the Gemini emulation with xbeaver gemini2.cfg -o V And then see if T-NET works with that. If that works (it does on mine) then try using the disk image in the previous post on your Gemini system. Please try all this with the disk image in tnet_eumulator.zip in post 182 Let me know the results. |
Re: Gemini 80-Bus System
Thanks, I will try the disk later today once I have coverted it to IMG.
Alas only one serial port on my linux box but could add a USB one I guess. Many thanks John |
Re: Gemini 80-Bus System
The symptoms are exactly the same with the disk you posted, when I get chance I will set up the emulator as you suggest.
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Re: Gemini 80-Bus System
Another useful test
1st run telnet A0>T-NET N and then remove it A>T_NET R and then run gemdebug A0>Gemdebug Gemdebug.... Run a terminal program on the windows/linux box The following sends character 41 on the serial port -ob8 41 And the command -qb8 Will display the last character received on the serial port. This will check the serial link including the cable and uart. |
Re: Gemini 80-Bus System
Thanks, that is very useful. I am away for a few days now but will try this at the weekend when I return.
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Re: Gemini 80-Bus System
Just updated the Gemini Resource Page just in case it helps anyone.
https://glasstty.com/wiki/index.php/...0-Bus_Resource |
Re: Gemini 80-Bus System
Quote:
Whilst I was away, I started looking in more detail at the various bios sources you sent me. As you know I have updated the Gemini bios to support QDDS disks now and this works rather well. I started to wonder how hard it would be to add the necessary to support my SASI emulator. I am keen to keep as near to the original Gemini setup as I can (I have no idea why, it just feels right for me) so whilst I have the CCPZ, BDOSZ and TBIOS, I really wanted to add Winchester support to the Gemini Bios. It's all about the journey, right? I have started to read everything I can find on CP/M modification, and I have the various specs for the controller etc. and of course the source you sent. Am I mad? I have found a chap who has the Gemini Multi Format Bios (MFB) which is awesome but is circa 1985 so a little newer than my system, I have not had too much luck so far in getting in touch with him anyway. Also there is Tony on this forum who may be able to help but is very busy with other things at the moment. So I wonder, how hard can it be? Probably beyond me but I just thought I would mention it. |
Re: Gemini 80-Bus System
I am pleased that you have t-net running - I find it invaluable, indeed the simulator uses it to access host directories!
T-NET was originally used between CP/M machines. When I wrote the xbeaver emulator I included a C version of the server. It took quite some investigation to get PIP to work as it does some undocumented tricks with the file control blocks but all happy now. Note: If you want to run it without trace omit the "trace tty" from the configuration line. Also upto 4 directories can be specified on the command line (Use & at the end of a line to continue on the next line). printf % strings such as %d etc can be used in the filename to include the user number. There are 16 user numbers (0 to 15) per drive letter and combined with symlinks these can be any linux directory - hence upto 64 directories can be accessed using 4 drive letters and the 16 user areas via t-net. |
Re: Gemini 80-Bus System
T-Net is awesome, thank you, but...
I have now started work in adding Winchester support to the bios. I am adding it to version 1.4 of the CP/M 2.2 64K bios (this is the version I modified for the GEMQDDS 788k floppy). In order to give me some working room I have shifted CP/M down a couple of pages to... Code:
A> MAPMEM S |
Re: Gemini 80-Bus System
t-net should work with the new configuration or indeed any size cp/m version. It automatically relocates itself. However try using ccpz rather than the standard cp/m processor.
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Re: Gemini 80-Bus System
I was hoping to use the original CP/M as it is this that I am updating, although I have the source you sent so could try it.
With the Gemini CP/M, when I run t-net n I see; Code:
T-NET V2.2Thanks. |
Re: Gemini 80-Bus System
1 Attachment(s)
Yes - if you just get one file you have a version without a conditional set.or an older version. The new version is compatable with standard cp/m (although I have not run it a lot with real cp/m).
Please use attached and let me know. |
Re: Gemini 80-Bus System
Will do, thanks.
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Re: Gemini 80-Bus System
Perfect, the new T-NET works a treat, thank you.
Just in case it is of any interest, I have been updating the article re: my progress with adding Winchester support at... https://glasstty.com/wiki/index.php/...inchester_Disk. |
Re: Gemini 80-Bus System
1 Attachment(s)
The following is an extraction of the bios used on xbeaver. You will need to merge this into your bios and include the disk tables required for the hard disk.
Note that the data on the hard disk is stored inverted. This is because the gemini floppy disk controllers inverts the data on read/write. Also you might like to give some consideration to allowing space for the os on the hard disk rather than having to boot of floppy. |
Re: Gemini 80-Bus System
Thank you, that is a big help.
I have been spending time reading old issues of Byte magazine and have found a series of articles relating to adding Winchester support to S100 systems, these have also given me some inspiration. I will keep the blog updated on day to day progress with the odd post here if I reach any significant milestones. |
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